YASKAWA Varispeed-616G3

MAIN
CIRCUIT
CAUTION
The
external
interconnection wiring must
be performed with fol-
lowing procedures .
After
completing VS-616G=1
interconnections, be sure to check
that connections are correct .
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Never use control circuit buzzer
check .
MAIN CIRCUIT INPUT/OUTPUT
(1) Phase rotation of input terminals L 1 (R), L2 (S), L3 (T) has no effect
on motor rotation .
(2) To reverse motor rotation, interchange
any two of the motor leads .
(3) Never connect the AC main circuit power supply to output terminals
T 1 (U), T2 (V), or T3 (W) .
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Inverter damage may occur .
(4) Care should be taken to prevent contact of wiring leads with VS-616G3
cabinet, for short-circuit may result .
(5) Never connect power factor correction
capacitors to VS-616G3 output .
(6) Never
open or close contactors in the output circuit unless the invert-
er is properly sized .
GROUNDING
Ground the casing of the VS-616G3 using ground terminal
G
(E)
.
(1) Ground resistance
should be 11000 or less .
(2) Never ground the VS-616G3 in common with welding machines, mo-
tors, and other large-current electrical equipment . Run the ground
lead in a
separate conduit from leads of large-current electrical
equipment .
(3) Use ground leads which comply with AWG standards using the short-
est length possible .
(4)
When several VS-616G3 units are used side by side, all the units
should
preferably be grounded directly
to the ground poles . However, con-
necting the ground terminal of
VS-616G3 units in parallel, and ground
ing only one of the VS-616G3 units
to the ground pole is also
permissible (Fig . 3) . However, do not form a loop with
the ground
leads .
CORRECT
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CORRECT
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NOT ACCEPTABLE
(a)

(b)

(C)
Fig .
3
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Grounding of Three VS-616G3 Units
_
~ 1,~G
UG
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